Adjusting device for seat element of vehicle seat

Abstract

The invention relates to an adjusting device for a seat element of a vehicle seat, the strength structure of said seat element being connected to a guide device 9 which is substantially oriented in a first spatial direction and on which a support 1 and a slide 2 are arranged in a longitudinally movable manner relative to each other by means of a first drive device 5. A support lever 3, which changes the contour of the seat element and which is hinged to the support 1, and a toggle lever 4, which is hinged to the slide 2 and to the support lever 3 via a connection joint 12, can be pivoted about axes that are oriented in a second spatial direction running perpendicularly to the first spatial direction and pivot on a plane defined by the first spatial direction and a third spatial direction running perpendicularly to the first and second spatial direction when the first drive device 5 is actuated.

Description

technical field [0001] The invention relates to an adjustment device for a seat element of a vehicle seat according to the preamble of claim 1 . Background technique [0002] The subject of the invention is for variably changing the shape of the backrest or headrest of a motor vehicle seat, of the side walls or of the support area of ​​the lower part of the seat, in particular for the adjustment of the pillar support or of the vehicle occupant in the lower part of the seat of the lumbar support in the lumbar area, of the headrest, of the support area of ​​the upper backrest of a separate backrest in the head area of ​​the vehicle occupant and in the shoulder area, of the side walls or sides of the backrest or of the lower part of the seat The radian and / or width of the . In this case, the adjustment device is designed in a modular manner and can thus be used for different adjustment functions and sizes and configurations of the seat element. [0003] From DE 197 37 271 C1 ...

AI Technical Summary

Problems solved by technology

[0009] In known adjusting devices, the transmission ratio of the drive unit to the load on the output side can be mismatched, depending on the type of construction, to the load curve on the output side, so that when driving manually, different adjustments are applied depending on the adjustment path. force and in the case of a motorized drive changes the load on the motor and thus changes the motor speed over the adjustment stroke, which results in uneven, disturbing sounds as well as painful motor noises

[0010] Furthermore, the known adjustment movements, in addition to adjusting the contact point of the passenger's body in the desired adjustment direction, also cause an undesired movement of the contact point which differs from the desired adjustment direction.